CN101554888B - Endgate hinge for motor vehicle having dual pivot axes - Google Patents

Endgate hinge for motor vehicle having dual pivot axes Download PDF

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Publication number
CN101554888B
CN101554888B CN2009101340673A CN200910134067A CN101554888B CN 101554888 B CN101554888 B CN 101554888B CN 2009101340673 A CN2009101340673 A CN 2009101340673A CN 200910134067 A CN200910134067 A CN 200910134067A CN 101554888 B CN101554888 B CN 101554888B
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CN
China
Prior art keywords
carriage
fixed
transverse axis
vertical shaft
trunnion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009101340673A
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Chinese (zh)
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CN101554888A (en
Inventor
J·M·汤森
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GM Global Technology Operations LLC
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GM Global Technology Operations LLC
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Filing date
Publication date
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Publication of CN101554888A publication Critical patent/CN101554888A/en
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Publication of CN101554888B publication Critical patent/CN101554888B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/48—Suspension arrangements for wings allowing alternative movements
    • E05D15/52—Suspension arrangements for wings allowing alternative movements for opening about a vertical as well as a horizontal axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D3/00—Hinges with pins
    • E05D3/06—Hinges with pins with two or more pins
    • E05D3/10—Hinges with pins with two or more pins with non-parallel pins
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/148—Windows
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
    • E05Y2900/544—Tailboards or sideboards
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
    • E05Y2900/546—Tailgates

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Hinge Accessories (AREA)
  • Superstructure Of Vehicle (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The invention relates to an endgate hinge for motor vehicle having dual pivot axes. An assembly for opening and closing a cargo opening of a motor vehicle includes first and second posts located at opposite lateral sides of the cargo opening, the second post being spaced laterally from the first post, an endgate able to open and close the cargo opening, and first, second and third brackets, each bracket secured to one of the posts and the endgate, and defining a lateral axis and an upright axis. The first bracket is secured to the first post. The second bracket is secured to the second post such that the lateral axis of the second bracket is aligned with the lateral axis of the first bracket. The third bracket is secured to the first post at an elevation higher than an elevation of the first bracket such that the upright axis of the third bracket is aligned with the upright axis of the first bracket.

Description

The tail gate hinge that is used for self-propelled vehicle with dual pivot
Technical field
Present invention relates in general to a kind of tail board (endgate) that is used for self-propelled vehicle, and relate in particular to a kind of tail board and hinge assembly, it allows tail board to rotate around transverse axis and vertical shaft alternatively.
Background technology
The back door at lorry, truck or cargo cab rear portion is hinged so that pivot downwards when the loading or unloading along the transverse axis of back door bottom usually.The door of vehicle rear is hinged upwards to open along the transverse axis at top, and this gate open often is called rear hatch or upper-turn-type car door.
In some cases, helpful and preferably, vehicle has the tail board that can rotate around vertical shaft as door so that lead to goods area.
Recently, auto-industry need a kind of hinge assembly, and it supports tail board, thus make tail board according to user's selection can be not only around transverse axis but also can be as rotating around vertical shaft.Being used for this multiduty each hinge should be substantially the same, be easy to install, occupy little space and low-cost available.
Summary of the invention
A kind of assembly that is used to open and close the path that leads to motorcar body comprises the tail board and the some carriages that are used to open and close this path, and each carriage all is fixed on tail board and the vehicle body and limits transverse axis and vertical shaft.First carriage is fixed on the vehicle body at the place, first side of said path.Second carriage is fixed on the vehicle body at the place, second side of this path relative with first side, thereby the transverse axis of second carriage is alignd with the transverse axis of first carriage.The 3rd carriage is fixed on the vehicle body at first side place, and is in the height place that the height with first carriage separates, thereby the vertical shaft of the 3rd carriage is alignd with the vertical shaft of first carriage.
Each carriage all comprises and is used for carriage is fixed on body side adapter plate (strap) on the vehicle body, is supported on the body side adapter plate and first trunnion that aligns with corresponding transverse axis, is used for carriage is fixed on the breast board side adapter plate on the tail board and is fixed on the body side adapter plate and second trunnion that aligns with corresponding vertical shaft.
First trunnion is supporting breast board side adapter plate on X or be rotated down.Second trunnion is supporting breast board side adapter plate and is rotating around vertical shaft.
This assembly provides dual-shaft articulation, has minimum weight and least cost.It makes it possible to by means of simple tool tail board removed from its mounted position on vehicle.
The tail board that has carriage can be installed in the vehicle before the application plant operations, and in the body work shop of assembly center, set size, had eliminated the needs of additional anti-corrosion protection thus.
A kind of embodiment provides a kind of method, is used for the move angle scope of limiting door on vehicle reliably, thereby prevents contacting between door and the special use and the vehicle body of non-constant width.
Description of drawings
Fig. 1 is the back view of cargo truck, tail board is shown opens around transverse axis;
Fig. 2 is the back view of cargo truck, tail board is shown opens around vertical shaft;
Fig. 3 is the transparent view of the universal carriage of tail board in the closed position;
Fig. 4 is the transparent view of the universal carriage of tail board, breast board side adapter plate is shown rotates to open position around transverse axis; And
Fig. 5 is the transparent view of the universal carriage of tail board, breast board side adapter plate is shown rotates to open position around vertical shaft.
The specific embodiment
Referring now to these accompanying drawings, cargo truck 10 has been shown among Fig. 1 and Fig. 2, its tail board 12 is used to open and close the inlet that leads to compartment 18 not only at transverse axis 14 but also hinged at vertical shaft 16 places.Left side post 20, right side post 22 and make the interconnected horizontal bars of post 20,22 form loading hatchs.Preferably, axle 14 is levels, and axle 16 is vertical, but they can be with respect to level and perpendicular deflection.
As shown in Figure 3, the universal carriage 26 of each tail board includes horizontal pivot axis 28 and vertical pivotal axis 30.Tail board 12 is supported on the vehicle 10 through the first universal carriage 32, second carriage 34 and the 3rd universal carriage 36; This first universal carriage is fixed on the post 20 of left side; This second carriage is fixed on the right side post 22, and the 3rd universal carriage is fixed on the post 20 of left side and is positioned at the position higher than the height of carriage 32.The axle 28 of carriage 32 and the axle of carriage 34 28 alignment and coaxial each other with transverse axis 14.The axle 30 of carriage 32 and the axle of carriage 36 30 alignment and coaxial each other with vertical shaft 16.
The universal carriage 26 of each tail board comprises body side adapter plate 40 and protrusion 44,46; This body side adapter plate is formed with connecting bore 42 and is used for removably body side adapter plate 40 being fixed on post 20,22, and these protrusions are parallel to each other and extend back from adapter plate 40.First trunnion 48 that aligns with axle 28 is supported on the protrusion 44,46.The universal carriage 26 of each tail board also comprises breast board side adapter plate 50 and protrusion 54,56, and this breast board side adapter plate is formed with connecting bore 52 and is used for adapter plate 50 is fixed on tail board 12, and these protrusions are parallel to each other and from adapter plate 50 horizontal expansions.Second trunnion 60 of annular knurl shouldered pin (knurled shoulderpin) form has square cross section and flat sides, and it is installed in protrusion 44, contacts between 46 and with them.Pin 60 is fixed on the breast board side adapter plate 50 through shouldered tap bolt 66, these shouldered tap bolts be inserted in the hole 62 that is formed in the protrusion 54,56 and with the screw-threaded engagement that is formed in the pin 60.When breast board side adapter plate 50 on the body side adapter plate 40 when axle 28 pivots and when it on the body side adapter plate 40 when axle 30 pivots, sell 60 and supporting breast board side adapter plate 50.
The spring lock 68 that is fixed on the tail board 12 engages with striker 70 on being positioned at post 22, is fixed on tail board on the off position thus and prevents its pivot around axle 14,16.
In operation, when the breast board side adapter plate 50 of carriage 32,34 on the corresponding body side adapter plate 40 when axle 28 pivots, tail board 12 turns to open position as shown in Figure 1 around axle 14.When the breast board side adapter plate 50 of carriage 32,36 on the corresponding body side adapter plate 40 when axle 30 pivots, tail board 12 turns to open position as shown in Figure 2 around axle 16.
The carriage that assembles 32,34,36 as shown in Figure 3 is transported to fitter's shop, and their body work shops there are mounted and fixed on the tail board 12.Use especially big hole the relation of tail board 12 and rear portion loading hatch can correctly be set at all hinged installed positions to guarantee them.If in order to keep in repair or adapting to the heavy lift situation must remove tail board 12, just make shouldered tap bolt 66 from removing down with pin 60 ingear states with simple tool, tail board 12 is separated with vehicle 10.Body side adapter plate 40 will remain fixed on the vehicle body.
Though in specification sheets, used term " tail board "; But the present invention also be applicable to be hinged on the top with the back door of opening down, be applicable to and be hinged on rear hatch or the upper-turn-type car door of top up to open, and be applicable to hinged so that the door of loading or unloading in the side.
Although describe some embodiment of the present invention in detail, be familiar with the technical personnel in field involved in the present invention and will find out multiple alternative and embodiment, be used for embodiment of the present invention in the scope of the claim of enclosing.

Claims (9)

1. assembly that is used to open and close the loading hatch of self-propelled vehicle comprises:
First post;
Second post, itself and first post are along spaced, and these posts are positioned at the opposite flank of said loading hatch;
Tail board, it can open and close said loading hatch; And
First, second and the 3rd carriage; Each carriage all be fixed in these posts one with said tail board on; And be limited with transverse axis and vertical shaft, said first carriage is fixed on said first post, and said second carriage is fixed on said second post; Thereby the transverse axis of said second carriage is alignd with the transverse axis of said first carriage; And said the 3rd carriage is fixed on said first post at the height place higher than the height of said first carriage, thereby the vertical shaft of said the 3rd carriage is alignd with the vertical shaft of said first carriage
Wherein, each carriage also comprises:
Be used for said carriage is fixed on the body side adapter plate on of these posts;
From extended first protrusion of said body side adapter plate;
Be supported on said first protrusion and first trunnion that aligns with corresponding transverse axis;
Be used for said carriage is fixed on the breast board side adapter plate on the said tail board;
Second protrusion that laterally extends from said breast board side adapter plate; And
Be supported on said second protrusion and second trunnion that aligns with corresponding vertical shaft, said first trunnion passes this second trunnion, and this second trunnion is owing to being prevented from rotation with contacting of said first protrusion.
2. assembly as claimed in claim 1, wherein, each transverse axis all is positioned at horizontal plane, and each vertical shaft all is positioned at perpendicular.
3. assembly as claimed in claim 1, wherein, the shank of said second trunnion is formed with and is assemblied between said first protrusion and the parallel plane that contacts with them.
4. assembly as claimed in claim 1 also comprises:
Be fixed on the spring lock on the said tail board; And
Be arranged in the striker on of said post, be used for engaging with said spring lock, said joint is fixed on said tail board on the off position and prevents that said tail board from pivoting around transverse axis and vertical shaft.
5. assembly that is used to open and close the path that leads to motorcar body comprises:
Be used to open and close the tail board of said path; And
First, second and the 3rd carriage; Each carriage all is fixed on the said tail board and is limited with transverse axis and vertical shaft; Said first carriage is fixed on the said vehicle body at the place, first side of said path; Said second carriage is fixed on the said vehicle body at place, second side of the said path relative with said first side, thereby the transverse axis of said second carriage is alignd with the transverse axis of said first carriage, and said the 3rd carriage is located to be fixed on the said vehicle body in said first side and is in the height place that the height with said first carriage separates; Thereby the vertical shaft of said the 3rd carriage is alignd with the vertical shaft of said first carriage
Wherein, each carriage also comprises:
Be used for said carriage is fixed on the body side adapter plate on the said vehicle body;
Be fixed on first protrusion on the said body side adapter plate;
Be fixed on said first protrusion and first trunnion that aligns with corresponding transverse axis;
Be used for said carriage is fixed on the breast board side adapter plate on the said tail board;
Be fixed on second protrusion on the said breast board side adapter plate; And
Second trunnion that aligns with corresponding vertical shaft, this second trunnion intersects with said first trunnion, is supporting said breast board side adapter plate around said vertical shaft rotation and owing to being prevented from rotation with contacting of said first protrusion.
6. assembly as claimed in claim 5, wherein, each transverse axis all is positioned at horizontal plane, and each vertical shaft all is positioned at perpendicular.
7. assembly as claimed in claim 5, wherein, said first trunnion is supporting said breast board side adapter plate and is rotating around said transverse axis.
8. assembly as claimed in claim 5, wherein, the shank of said second trunnion is formed with and is assemblied between said first protrusion and the parallel plane that contacts with them.
9. assembly as claimed in claim 5 also comprises:
Be fixed on the spring lock on the said tail board; And
Be positioned at the striker on the said vehicle body, be used for engaging with said spring lock, said joint is fixed on said tail board on the off position and prevents that said tail board from pivoting around transverse axis and vertical shaft.
CN2009101340673A 2008-04-08 2009-04-08 Endgate hinge for motor vehicle having dual pivot axes Expired - Fee Related CN101554888B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/099,179 US7669908B2 (en) 2008-04-08 2008-04-08 Endgate hinge for motor vehicle having dual pivot axes
US12/099179 2008-04-08

Publications (2)

Publication Number Publication Date
CN101554888A CN101554888A (en) 2009-10-14
CN101554888B true CN101554888B (en) 2012-05-23

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Application Number Title Priority Date Filing Date
CN2009101340673A Expired - Fee Related CN101554888B (en) 2008-04-08 2009-04-08 Endgate hinge for motor vehicle having dual pivot axes

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US (1) US7669908B2 (en)
CN (1) CN101554888B (en)
BR (1) BRPI0900787A2 (en)
DE (1) DE102009016265B4 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8061753B2 (en) * 2009-01-20 2011-11-22 Ford Global Technologies, Llc Universal tailgate hinge
US8500184B2 (en) * 2010-09-14 2013-08-06 King Kutter, Inc. Trailer with multi-positional gate
US8936330B2 (en) 2010-12-23 2015-01-20 Lg Electronics Inc. Laundry treating apparatus
US8820861B2 (en) * 2010-12-23 2014-09-02 Lg Electronics Inc. Laundry treating apparatus
CN102330525B (en) * 2011-03-16 2015-04-15 赵立军 Control mechanism for a bidirectional side-open automobile window
EP3243698B1 (en) 2011-04-20 2021-03-17 Stefan De Rycke Vehicle having slanting and tipping possibilities
US9844173B2 (en) 2012-07-31 2017-12-19 Fast Global Solutions, Inc. Side folding toolbar for chemical applicator
DE102013104877B4 (en) * 2013-04-18 2020-12-03 Linde Material Handling Gmbh Industrial trucks, in particular electrically operated industrial trucks
BR102014002330B1 (en) * 2014-01-30 2022-03-08 Fca Fiat Chrysler Automoveis Brasil Ltda REAR DOOR WITH LOAD AREA EXTENDER FOR AUTOMOTIVE CARGO VEHICLE AND AUTOMOTIVE VEHICLE
KR102139533B1 (en) * 2014-03-21 2020-07-30 엘지전자 주식회사 Laundry Treating Apparatus
BR112016030953A8 (en) * 2014-07-02 2021-06-29 Renault Sas automotive vehicle
US10661842B2 (en) * 2014-08-19 2020-05-26 Magna Exteriors Inc. Modular tailgate
GB2529837B (en) * 2014-09-03 2020-08-05 The Norman Trust Utility vehicle
US10023098B1 (en) * 2017-03-29 2018-07-17 Ford Global Technologies, Llc Cargo transport system for a truck
CN108691470B (en) 2017-04-07 2021-09-24 福特环球技术公司 Double-pivot horizontal translation hinge
US10189412B2 (en) * 2017-04-11 2019-01-29 Ford Global Technologies Llc Stow-away tailgate
US10358172B2 (en) * 2017-12-15 2019-07-23 Fca Us Llc Latching assembly for multi-functional tailgate door
DE102018131586B3 (en) 2018-11-23 2020-03-05 PRINZ Kinematics GmbH Tailgate hinge
DE202018107028U1 (en) 2018-11-23 2019-11-26 PRINZ Kinematics GmbH tailgate hinge
US11505261B2 (en) * 2020-02-07 2022-11-22 Fca Us Llc Vehicle hinge assembly
USD960070S1 (en) * 2021-07-05 2022-08-09 Yongjiang Yang Tailgate hinge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020084A (en) * 1959-07-30 1962-02-06 Paul W Sylvester Parting swivel joint
US3592504A (en) * 1969-07-28 1971-07-13 Gen Motors Corp Dual-action tailgate
US5040390A (en) * 1989-11-16 1991-08-20 General Motors Corporation Lock and control assembly for a vehicle tailgate
CN2389096Y (en) * 1999-07-30 2000-07-26 浙江征远专用汽车厂 Improvement for tipping body
US7258373B2 (en) * 2004-06-30 2007-08-21 Honda Motor Co., Ltd. Vehicle lock assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19745032B4 (en) 1996-10-17 2004-10-07 Volkswagen Ag Hinge assembly for the pivotable articulation of a door or tailgate on a body part of a motor vehicle
US6938941B2 (en) * 2003-09-16 2005-09-06 Honda Motor Co., Ltd. Tailgate dual mode hinge with integrated checker
DE202005013033U1 (en) 2005-08-18 2006-03-23 Lau, Mario Vehicle door hinge has horizontal hinge on body offering horizontal turning axis for vertical hinge, lifting arm attached to door and in down position aligned from behind towards door, and gas pressure spring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020084A (en) * 1959-07-30 1962-02-06 Paul W Sylvester Parting swivel joint
US3592504A (en) * 1969-07-28 1971-07-13 Gen Motors Corp Dual-action tailgate
US5040390A (en) * 1989-11-16 1991-08-20 General Motors Corporation Lock and control assembly for a vehicle tailgate
CN2389096Y (en) * 1999-07-30 2000-07-26 浙江征远专用汽车厂 Improvement for tipping body
US7258373B2 (en) * 2004-06-30 2007-08-21 Honda Motor Co., Ltd. Vehicle lock assembly

Also Published As

Publication number Publication date
DE102009016265B4 (en) 2010-08-19
BRPI0900787A2 (en) 2009-12-01
CN101554888A (en) 2009-10-14
US20090250577A1 (en) 2009-10-08
US7669908B2 (en) 2010-03-02
DE102009016265A1 (en) 2009-10-29

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